Dispersed camping near Three Forks, Montana occurs at elevations ranging from 4,000 to 5,500 feet, with the Jefferson, Madison, and Gallatin rivers converging in this area to form the Missouri River. Summer temperatures fluctuate between 45°F at night and 85°F during the day, with sudden afternoon thunderstorms common from July through September. Fall camping season typically extends until mid-October when overnight temperatures consistently drop below freezing.
What to do
Wildlife viewing along river corridors: Several campers at Missouri Headwaters State Park Campground report regular wildlife sightings. "The real highlight is the location—you're right at the spot where the Jefferson, Madison, and Gallatin Rivers come together to form the Missouri River. The area is scenic, peaceful, and full of history with several short walking trails along the water and through the park," notes Sayler O.
Fishing access points: Multiple fishing spots exist within 15 minutes of Three Forks. At Red Mountain, riverside sites allow direct water access. "This stretch of river is known for floating and is well suited for this activity as well as fishing," explains Palmi B. The Madison River typically offers best fishing conditions from mid-June through September.
Historical exploration: The history of Lewis and Clark's expedition features prominently at several camping areas. "Experience camping near where Captains Meriwether Lewis and William Clark and the Corps of Discovery camped at the headwaters of the Missouri river in 1805," shares Dexter I. about Missouri Headwaters State Park. "Historical signs about the Corps of Discovery stay at the headwaters of the Missouri and their journey are located throughout the park."
What campers like
Hot springs access: Campers appreciate the proximity to natural hot springs. Norris Hot Springs combines camping with direct access to thermal waters. "Your reservation includes your soak. They offer live music in the dome on the weekends. Imagine soaking in a beautiful wooden pool, enjoying a cold beverage and a pizza, while you listen to live music," reports Ashley F. The springs maintain temperatures between 100-106°F year-round.
Secluded river spots: Campers value finding quieter camping locations with water access. "Harrison Lake Campground is a great spot if you're looking for a quiet getaway. The campsites are spacious and well-spread out, offering plenty of privacy," notes Charlie L. about Harrison Lake Campground. Many reviews highlight the appeal of water proximity without crowds.
Clean facilities: Campers frequently mention clean restrooms as a highlight. "The vault toilets are very clean and smell fresh," notes Andreas W. about Missouri Headwaters State Park. This sentiment appears consistently across maintained campgrounds in the area, with many campers specifically noting the cleanliness of basic facilities.
What you should know
Mosquito presence: Several campers warn about mosquito activity, particularly near water sources. "When the sun sets in June and July the mosquitos will come out. They are quite nasty but an hour after sunset they are gone, having a campfire going helps too," explains Andreas W. Campers at wetter locations consistently recommend bringing strong insect repellent, especially during evening hours.
Water availability concerns: Access to potable water varies significantly by location. "The campground has nice level sites, although needed quite a bit of leveling. On my visit, I would say that about only 25% of the lake volume was left, so this lake and all of Montana could really do with some rain," notes Dexter I. at Harrison Lake Campground.
Weather fluctuations: The area experiences significant temperature swings and sudden weather changes. A camper at Lewis & Clark Caverns State Park advises: "Beware, it's a 2 mile hike uphill from the campground if you don't want to drive your RV up to the caves! Check weather report, strong winds and we had thunderstorms." Weather conditions can change rapidly, particularly in spring and fall.
Tips for camping with families
Playground access: Several campgrounds feature dedicated play areas for children. "We camped here with a group of families and the playground was nice for the kids. There aren't many trees and the land is flat but we were able to really keep a decent eye of the kids running around because of it," shares Heather about Lewis & Clark Caverns State Park.
Farm-stay experiences: Families seeking unique camping experiences have options beyond traditional campgrounds. At Serenity Sheep Farm Stay, "The kids enjoyed the animals. There is a nice fire pit that made for a gathering spot for the other few campers," reports Chula R. The farm stay offers limited sites (only 2 available) and typically books up 3-4 weeks in advance during summer.
Educational programs: Some locations offer structured activities for children. "Did you know you can print out a packet for your little ones to become Cub Rangers at this State Park?" notes Sierra V. about Lewis & Clark Caverns State Park. These programs typically run from Memorial Day through Labor Day.
Tips from RVers
Site leveling requirements: Many RV campers report needing leveling equipment. "Your standard run of the mill campsite. Lots of people there when we visited. Close to the caverns for a tour. Had to use all our jack stands to combat the slope of our site (P007). Others looked much more level," shares Michael B. about Lewis & Clark Caverns State Park.
Hook-up availability: Full-service sites are limited in the immediate Three Forks area. At Bozeman Hot Springs Campground, "The sites at these grounds do vary a bit. We were in Row C in a back-in site with FHU. While the sites are close together, the space on the grass gives it a sense of openness," explains Kristin S. RVers should note that many campgrounds offer electric-only hookups, with water fill and dump stations located separately from sites.
Early reservations essential: RV spots with hookups book quickly during peak season (June-August). "When we arrived, my husband went in to register and a fellow in a golf cart met us to escort us to our spot. When he double checked the spot, he said, hold on, I think someone is in that spot... Once he came back to us, he had a new spot for us, which he said, 'I think you'll like this one better,'" reports Christina F. about Three Forks KOA Journey.
